Title :
Time of flight measurement on the SOFIA experiment
Author :
Bail, A. ; Taieb, J. ; Chatillon, A. ; Belier, G. ; Laurent, B. ; Pellereau, E.
Author_Institution :
CEA/DAM/DIF, Arpajon, France
Abstract :
The SOFIA experiment, which will be held at GSI (Darmstadt, Germany) will allow to completely determine the mass and charge numbers of fragments produced in the fission reaction of radioactive actinides in reverse kinematics. Therefore, a dedicated setup has been developed for the Time of Flight measurement of relativistic heavy ions. The studies, which led to the choice of the adequate plastic scintillators and photomultipliers, are presented. Tests have been undertaken with the ELSA laser and electron beam facility. They shown that a suitable choice would be EJ-232 plastic scintillator for the ToF wall and EJ-232Q for the start detector and Hamamatsu H6533 and H10580 photomultipliers. This was confirmed by two test experiments realized at GSI with relativistic heavy ion beam (56Fe and 238U), where a time of flight resolution better than 20 ps FWHM was reached.
Keywords :
electron accelerators; photomultipliers; solid scintillation detectors; synchrotrons; EJ-232 plastic scintillator; ELSA laser; Hamamatsu H10580 photomultiplier; Hamamatsu H6533 photomultiplier; SOFIA experiment; electron beam facility; fission reaction; fragment charge numbers; fragment mass; radioactive actinides; relativistic heavy ion beam; reverse kinematics; time-of-flight measurement; time-of-flight resolution; Attenuation; Blades; Detectors; Measurement by laser beam; Photomultipliers; Plastics;
Conference_Titel :
Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), 2011 2nd International Conference on
Conference_Location :
Ghent
Print_ISBN :
978-1-4577-0925-8
DOI :
10.1109/ANIMMA.2011.6172842
